jern — the coding agent whose brain is a program
Sessions on isolated machines under a pinned policy, a hard token cap, and encrypted evidence. Every session ends in a pull request you review.
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 3 September 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
jern — the coding agent whose brain is a program covers some of the launch checklist, with complete legal pages, a thorough launch checklist, and fast page loads. Main gaps: missing several security headers, no robots.txt or sitemap, and incomplete email security.
The site is hosted on GitHub Pages and served through Fastly, with a domain registered 1 day before launch. Our crawler found 6 technologies on this site, covering CDN, DNS providers, business email, and hosting. The stack includes DNSimple, Fastly, and Fastmail.
It's also on one of the most common stacks we track, shared by 2,670 launches.
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Tech Stack (6)
| CDN |
Fastly
|
| DNS |
DNSimple
|
| Hosting |
GitHub Pages
|
| Security | HSTS new |
| Business email |
Fastmail
new
(3)
|
| SEO |
Google Search Console
new
|
Infrastructure
Email Security
Storage (0)
Readiness Breakdown How?
Performance How?
⚠ 2 images: 2 oversized, 2 missing alt text
Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI onboarding signals | +5 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.